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Thread: Re: It takes a long time to disassemble some instructions for remote target




Re: It takes a long time to disassemble some instructions for remote target
country flaguser name
United States
2007-11-20 06:06:10
On Tue, 2007-11-20 at 14:46 +0800, Robert Bu wrote:
> > On Wed, 2007-11-14 at 16:39 +0800, Robert Bu
wrote:
> >> Hello all,
> >>
> >>     When I try to disassemble a range of
instructions, for example from
> >> PC1 to PC2, GDB tries to fetch and disassemble
the instructions one by
> >> one. This may not be a problem for native
debugging, or for remote
> >> debugging with high connection speed. However,
it takes some long time
> >> for a not so fast serial connection, since GDB
fetches one instruction
> >> at a time, which results in a lot of 'm'
packets.
> >>     Is that possible for GDB to fetch all
instructions back for one time
> >> with just one(maybe more than one, but now a
lot of) 'm' packet, and
> >> disassemble them locally one by one?
> >
> > My friend, I have just the thing you need!
> > It slices!  It dices!  It prevents gdb from
> > needlessly fetching memory from text sections!
> >
> > All ya gotta do is type "set
trust-readonly"!
> > And if ya don't trust me (but who am I kidding,
> > EVERYBODY trusts a carny!), you can just type
> > "help set trust-readonly" and read all
about it
> > yourself!
> >
> This option does not work in GDB 6.4. However it works
in GDB 6.6. Quite
> strange!

Yes, it was broken for a while.  Now it is fixed, 
and hopefully we will keep it fixed.




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